62 results authored by Nick Walker - search across all users.
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Question in CHY1201 - Spectroscopy
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Question in CHY1201 - Spectroscopy
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Question in CHY1201 - Spectroscopy
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Question in CHY1201 - Spectroscopy
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Question in CHY1201 - SpectroscopyThe reduced masses are pre-calculated for this question and included in a list. It would be more elegant to program Numbas to permute atoms together to generate diatomic molecules while constraining the permutations to those which are chemically/physically reasonable, so as to allow calculation of each reduced mass directly from the atomic masses- but organising this with high computational efficiency might be a significant programing task (add to "to do" list).
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Question in CHY1201 - SpectroscopyThe reduced masses are pre-calculated for this question and included in a list. It would be more elegant to program Numbas to permute atoms together to generate diatomic molecules while constraining the permutations to those which are chemically/physically reasonable, so as to allow calculation of each reduced mass directly from the atomic masses- but organising this with high computational efficiency might be a significant programing task (add to "to do" list).
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Question in CHY1201 - SpectroscopyThe reduced masses are pre-calculated for this question and included in a list. It would be more elegant to program Numbas to permute atoms together to generate diatomic molecules while constraining the permutations to those which are chemically/physically reasonable, so as to allow calculation of each reduced mass directly from the atomic masses- but organising this with high computational efficiency might be a significant programing task (add to "to do" list).
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Question in CHY1201 - SpectroscopyThe reduced masses are pre-calculated for this question and included in a list. It would be more elegant to program Numbas to permute atoms together to generate diatomic molecules while constraining the permutations to those which are chemically/physically reasonable, so as to allow calculation of each reduced mass directly from the atomic masses- but organising this with high computational efficiency might be a significant programing task (add to "to do" list).
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Question in CHY1201 - Spectroscopy
No description given
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Question in CHY1201 - Spectroscopy
No description given
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Question in CHY1201 - Spectroscopy
No description given
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Question in CHY1201 - SpectroscopyQuestion requires students to themselves calculate how many electrons are in the conjugated system for the molecules included in this question. As is standard for applications of the "particle in a box" model, the embedded assumption is that one electron is donated to the pi-system by each carbon within the conjugated chain. Students instructed to assume that there are 22 conjugated electrons in Beta-carotene.
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Question in CHY1201 - Spectroscopy
No description given
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Question in CHY1201 - SpectroscopyQuestion requires students to interchange units of Hz with MHz, GHz, THz. Question is not very efficient at present- frequencies spanning many orders of magnitude are generated by variables in a clumsy way. Could be improved by having frequency generated by a 10^((random(1000..4000)/1000) variable instead, for example.
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Question in NES1406 General Chemistry
The student must enter a number in scientific notation, with separate boxes for significand and exponent. They only get the marks if both elements are correct.
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Question in CHY1201 - Spectroscopy
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Question in CHY1201 - Spectroscopy
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Question in Nick's workspace
Compute a table of values for a cubic function. A JSXgraph (the graph paper) plot shows the curve going through the entered values. The student input is now disconnected from the graph so that they slide the points usually after they input the values and the answer fields are not updated.
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Exam (4 questions) in CHY1201 - Spectroscopy
No description given
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Question in CHY1201 - SpectroscopyThe reduced masses are pre-calculated for this question and included in a list. It would be more elegant to program Numbas to permute atoms together to generate diatomic molecules while constraining the permutations to those which are chemically/physically reasonable, so as to allow calculation of each reduced mass directly from the atomic masses- but organising this with high computational efficiency might be a significant programing task (add to "to do" list).
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Exam (23 questions) in CHY1201 - SpectroscopyA set of questions about spectroscopy used for formative assessment purposes.
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Question in CHY1201 - SpectroscopyThe reduced masses are pre-calculated for this question and included in a list. It would be more elegant to program Numbas to permute atoms together to generate diatomic molecules while constraining the permutations to those which are chemically/physically reasonable, so as to allow calculation of each reduced mass directly from the atomic masses- but organising this with high computational efficiency might be a significant programing task (add to "to do" list).
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Question in CHY1201 - Spectroscopy
No description given
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Question in CHY1201 - Spectroscopy
Question requires students to interchange units of Hz with MHz, GHz, THz. Question is not very efficient at present- frequencies spanning many orders of magnitude are generated by variables in a clumsy way. Could be improved by having frequency generated by a 10^((random(1000..4000)/1000) variable instead, for example.
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Question in CHY1201 - Spectroscopy
No description given
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Question in CHY1201 - Spectroscopy
No description given
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Exam (5 questions) in Nick's workspace
Differential equations.
rebelmaths
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Exam (4 questions) in Nick's workspace
5 questions on definite integrals - integrate polynomials, trig functions and exponentials; find the area under a graph; find volumes of revolution.
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Exam (5 questions) in Nick's workspace
5 questions on indefinite integration. Includes integration by parts and integration by substitution.
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Exam (7 questions) in Nick's workspace
Basic indefinite integrals, Basic definite integrals, integration by substitution
rebel
rebelmaths